Android8.1 添加修改默认壁纸 | 您所在的位置:网站首页 › 安卓背景图片设置在哪里 › Android8.1 添加修改默认壁纸 |
关于壁纸的尺寸,建议静态壁纸的宽,高是:宽=屏幕分辨率的宽*2,高=屏幕分辨率的高;当然如果静态壁纸的宽,高与屏幕分辨率相等也是可以的,但是需要修改下代码不然Launcher workspace的背景会被拉伸。 1.添加多张静态壁纸 1.1 在/packages/apps/WallpaperPicker/res/drawable-nodpi/的文件夹下新增加wallpaper图片,每个wallpaper需要两种图片一张原图一张缩略图,如下形式: wallpaper01.png wallpaper01_small.png wallpaper02.png wallpaper02_small.png缩略图的文件名必须是原图"文件名"+“_small” 1.2 在/packages/apps/WallpaperPicker/res/values-nodpi的wallpapers.xml中修改: wallpaper01 wallpaper02没有这个目录或者文件的直接创建一个。 如果你的wallpaper图片尺寸宽是两倍的屏幕宽,这样修改就成功添加多张壁纸; 如果你的wallpaper图片尺寸宽高与屏幕宽高相同,还需进行第三步修改避免Launcher workspace的背景被拉伸。 1.3 请在WallpaperUtils.java的getDefaultWallpaperSize方法中,找到如下代码: @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1) public static Point getDefaultWallpaperSize(Resources res, WindowManager windowManager) { if (sDefaultWallpaperSize == null) { Point realSize = new Point(); windowManager.getDefaultDisplay().getRealSize(realSize); int maxDim = Math.max(realSize.x, realSize.y); int minDim = Math.min(realSize.x, realSize.y); // We need to ensure that there is enough extra space in the wallpaper // for the intended parallax effects final int defaultWidth, defaultHeight; if (res.getConfiguration().smallestScreenWidthDp >= 720) { defaultWidth = (int) (maxDim * wallpaperTravelToScreenWidthRatio(maxDim, minDim)); defaultHeight = maxDim; } else { defaultWidth = Math.max((int) (minDim * WALLPAPER_SCREENS_SPAN), maxDim); defaultHeight = maxDim; /*defaultWidth = realSize.x defaultHeight = realSize.y */ } sDefaultWallpaperSize = new Point(defaultWidth, defaultHeight); } return sDefaultWallpaperSize; }请先确认代码走那个分支(与设备分辨率有关),然后把defaultWidth 和defaultHeight 修改为屏幕宽高 defaultWidth = realSize.x,defaultHeight = realSize.y 2.替换系统默认静态壁纸请用目标壁纸替换掉/frameworks/base/core/res/res目录下drawable-nodpi/drawable-xhpi/drawablexxhdpi/drawable-xxxhdpi这四个folder下面的default_wallpaper 3.只设置主屏幕壁纸,锁屏壁纸也变成桌面壁纸这是Android N的默认设计,具体请参考WallpaperManagerService的setWallpaper方法,如下: /* If we're setting system but not lock, and lock is currently sharing the system * wallpaper, we need to migrate that image over to being lock-only before * the caller here writes new bitmap data. */ if (which == FLAG_SYSTEM && mLockWallpaperMap.get(userId) == null) { if (DEBUG) { Slog.i(TAG, "Migrating system->lock to preserve"); } migrateSystemToLockWallpaperLocked(userId); }可以把这段注释掉 |
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